量子电子学报2024，Vol.41Issue(5)：729-737,9.DOI:10.3969/j.issn.1007-5461.2024.05.003
线性光学采样算法中的多普勒补偿研究
Research on Doppler compensation in linear optical sampling algorithm
摘要
Abstract
The time-frequency transmission technology based on two optical combs has been able to achieve stable time-frequency transmission in experiment.However,the linear optical sampling algorithm will suffer from Doppler effect when there is relative motion on both sides of the two optical combs.In order to accurately calculate the time delay and frequency shift of the interference signal caused by Doppler effect,a joint estimation algorithm of time difference and frequency offset based on wide-band cross ambiguity function is studied.Several groups of interference signal are simulated under specific parameters when the optical comb delay is 38.78 fs and the relative speed is between 0 and 1800 m/s.In this speed interval,the delay error is 0 and the speed error is less than 0.3 m/s.Compared with the narrow-band cross ambiguity function,the proposed algorithm has better performance of time and frequency scale estimation at high speed.关键词
量子信息/量子精密测量/线性光学采样/多普勒效应/时差频差/宽带互模糊函数Key words
quantum information/quantum precision measurement/linear optical sampling/Doppler effect/time difference and frequency offset/wide-band cross ambiguity function分类
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施锡平,刘尉悦..线性光学采样算法中的多普勒补偿研究[J].量子电子学报,2024,41(5):729-737,9.基金项目
浙江省自然科学基金(LY21F050003) （LY21F050003）
